src/test/ui/single-use-lifetime/one-use-in-fn-argument.stderr

   1 error: lifetime parameter `'a` only used once
   2   --> $DIR/one-use-in-fn-argument.rs:8:6
   3    |
   4 LL | fn a<'a>(x: &'a u32) {
   5    |      ^^      -- ...is used only here
   6    |      |
   7    |      this lifetime...
   8    |
   9 note: the lint level is defined here
  10   --> $DIR/one-use-in-fn-argument.rs:1:9
  11    |
  12 LL | #![deny(single_use_lifetimes)]
  13    |         ^^^^^^^^^^^^^^^^^^^^
  14 help: elide the single-use lifetime
  15    |
  16 LL - fn a<'a>(x: &'a u32) {
  17 LL + fn a(x: &u32) {
  18    |
  19
  20 error: lifetime parameter `'m` only used once
  21   --> $DIR/one-use-in-fn-argument.rs:15:11
  22    |
  23 LL | fn center<'m>(_: Single<'m>) {}
  24    |           ^^            -- ...is used only here
  25    |           |
  26    |           this lifetime...
  27    |
  28 help: elide the single-use lifetime
  29    |
  30 LL - fn center<'m>(_: Single<'m>) {}
  31 LL + fn center(_: Single<'_>) {}
  32    |
  33
  34 error: lifetime parameter `'y` only used once
  35   --> $DIR/one-use-in-fn-argument.rs:17:13
  36    |
  37 LL | fn left<'x, 'y>(foo: Double<'x, 'y>) -> &'x u32 { foo.f }
  38    |             ^^ this lifetime... -- ...is used only here
  39    |
  40 help: elide the single-use lifetime
  41    |
  42 LL - fn left<'x, 'y>(foo: Double<'x, 'y>) -> &'x u32 { foo.f }
  43 LL + fn left<'x>(foo: Double<'x, '_>) -> &'x u32 { foo.f }
  44    |
  45
  46 error: lifetime parameter `'x` only used once
  47   --> $DIR/one-use-in-fn-argument.rs:19:10
  48    |
  49 LL | fn right<'x, 'y>(foo: Double<'x, 'y>) -> &'y u32 { foo.f }
  50    |          ^^ this lifetime... -- ...is used only here
  51    |
  52 help: elide the single-use lifetime
  53    |
  54 LL - fn right<'x, 'y>(foo: Double<'x, 'y>) -> &'y u32 { foo.f }
  55 LL + fn right<'y>(foo: Double<'_, 'y>) -> &'y u32 { foo.f }
  56    |
  57
  58 error: aborting due to 4 previous errors
  59